Thread: Field strength

Two charges of +4.0x10^-6 C and +8.0x10^-6C are placed 2.0m apart. What is the field strength halfway between them?

= (9.0x10^9)(4.0x10^-6C) + (9.0x10^9)(8.0x10^-6C)
(2m)^2 (2m)^2

This is what I have...which part is wrong?

Originally Posted by johett

Two charges of +4.0x10^-6 C and +8.0x10^-6C are placed 2.0m apart. What is the field strength halfway between them?

= (9.0x10^9)(4.0x10^-6C) + (9.0x10^9)(8.0x10^-6C)
(2m)^2 (2m)^2

This is what I have...which part is wrong?

They are 2m apart, so the point midway between them is 1m from each, and where are the terms?

RonL

Originally Posted by johett

Two charges of +4.0x10^-6 C and +8.0x10^-6C are placed 2.0m apart. What is the field strength halfway between them?

= (9.0x10^9)(4.0x10^-6C) + (9.0x10^9)(8.0x10^-6C)
(2m)^2 (2m)^2

This is what I have...which part is wrong?

and the two terms are in opposite directions so one of them should have a "-"
sign in front of it.

RonL